package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws Exception{

        //2.判断是否有某个桶
        boolean b = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());

        //3.没有，创建某个桶
        if (!b) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            //4.给桶设置访问权限
            //设置  桶的访问权限
            String policy = """
                    {
                        "Statement" : [ {
                            "Action" : "s3:GetObject",
                            "Effect" : "Allow",
                            "Principal" : "*",
                            "Resource" : "arn:aws:s3:::%s/*"
                        } ],
                        "Version" : "2012-10-17"
                    }""".formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(policy).build());

            //上传对象到 minion 中
            //文件名不能重复 uuid    yyyyMMdd / uuid + "_" + filename "文件夹名 / 文件名"
            String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "_" + file.getOriginalFilename();
            minioClient.putObject(PutObjectArgs.builder()
                    .bucket(minioProperties.getBucketName())
                    .object(filename)
                    .stream(file.getInputStream(), file.getSize(), -1)
                    .contentType(file.getContentType())
                    .build());

            // 拼接下 访问地址
            String url = String.join("/", minioProperties.getEndpoint(), minioProperties.getBucketName(), filename);
            return url;
        }

        return null;
    }
}
